unaccented

from WordNet (r) 3.0 (2006)

unaccented
    adj 1: used of syllables; "an atonic syllable carries no stress"
           [syn: {atonic}, {unaccented}] [ant: {accented}, {tonic}]
    2: (used of vowels or syllables) pronounced with little or no
       stress; "a syllable that ends in a short vowel is a light
       syllable"; "a weak stress on the second syllable" [syn:
       {unaccented}, {light}, {weak}]

from The Collaborative International Dictionary of English v.0.48

Unaccented \Unaccented\
   See {accented}.

from Moby Thesaurus II by Grady Ward, 1.0

87 Moby Thesaurus words for "unaccented":
      accented, alveolar, apical, apico-alveolar, apico-dental,
      articulated, assimilated, back, barytone, bilabial, broad,
      cacuminal, central, cerebral, checked, close, consonant,
      consonantal, continuant, dental, dissimilated, dorsal, flat, front,
      glide, glossal, glottal, guttural, hard, heavy, high, intonated,
      labial, labiodental, labiovelar, lateral, lax, light, lingual,
      liquid, low, mid, monophthongal, muted, narrow, nasal, nasalized,
      occlusive, open, oxytone, palatal, palatalized, pharyngeal,
      pharyngealized, phonemic, phonetic, phonic, pitch, pitched,
      posttonic, retroflex, rounded, semivowel, soft, sonant, stopped,
      stressed, strong, surd, syllabic, tense, thick, throaty, tonal,
      tonic, twangy, unrounded, unstressed, velar, vocalic, vocoid,
      voiced, voiceless, vowel, vowellike, weak, wide